24. Solving a chemistry problem

4. The volume V of the substance (related to 273 K and 1.01 * 105 Pa) adsorbed 1 g of adsorbent at 273 K and various pressures is given in the table:
1) plot the adsorption isotherm V=f(p) and p/V=f(p);
2) describe the adsorption isotherm using the Langmuir equation;
3) determine adsorption (m3/g) at maximum filling of the adsorbent;
4) determine the degree of filling of the adsorbent at pressure P1;
5) determine at what gas pressure the degree of filling of the adsorbent will be 0.4.
T,K Adsorbent Adsorbate P1*10-4, Pa P*10-3, Pa V*106, m3/g
293 coal C2H4 52.0 2.0 4.27 10.57 29.5 91.5 10.4 20.8 30.5 42.4 55.2